Space travel has long been hailed as the next human frontier, but rarely is it advertised as a disgusting nightmare. For instance, everyone knows about Apollo 11 and Neil Armstrong being the first man on the moon, but you likely weren’t taught how he went to the bathroom on the three-day journey. Simply put, space is not as glamorous as it sounds. From the sweat that sticks to your body to the uncomfortable contraption to relieve yourself, putting the human body in space poses many challenges. If we want to get to Mars, we’re going to need to find ways to lower the ick factor. Ready to rethink your conception of traveling through space? Here are 25 Disgusting Things About Space Travel You Never Thought About.